White balance processing method and device for all-weather color camera

Abstract

The invention discloses a method and device for processing white balance of an all-weather color camera. The method includes obtaining a mapping relationship table among image exposure parameters, image brightness, and ambient illuminance through training; acquiring an image to be processed; Process the image brightness of the image and the corresponding exposure parameters, and obtain the current environmental illuminance information according to the exposure parameters, image brightness and mapping relationship table; according to the current environmental illuminance information and the current infrared light intensity information detected in real time Infrared-removal processing is performed on the image to be processed; white balance correction is performed on the processed image obtained through the infrared-removal processing. Adopting the present invention can avoid the distortion problem caused by being unable to correct effectively due to the influence of infrared light in the automatic white balance process, and at the same time solve the brightness problem in low-light situations, so that good-quality color can still be obtained in low-light situations image.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a white balance processing method and device for an all-weather color camera. Background technique [0002] Generally, video camera equipment such as a digital video camera and a digital still camera generally include: an optical lens, an image sensor, an image processing chip, an image transmission module, and an image display module. [0003] As we all know, objects of the same color will appear in different colors under the illumination of different light sources. For example, a gray object will appear yellow when illuminated by an incandescent lamp, and it will appear blue when illuminated by a cold light source. Since the human eye has an automatic color adjustment function based on such an environment, the human eye can restore the essential color of an object under different light sources. However, in such an environment, the output color after processing by the ...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem that the reddish output image in the existing method of using the dual-filter IR_CUT to achieve white balance correction makes it difficult to perform white balance correction and the problem of increased noise in the output image in a low-light environment, the purpose of the embodiments of the present invention is to Provided is an all-weather color camera white balance processing method and device, and an all-weather color camera that does not include IR_CUT, which can effectively correct the white balance of the output image to obtain a color image with bright colors and less image noise

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